import sys import math def is_prime(num): for j in range(2,int(math.sqrt(num)+1)): if (num % j) == 0: return False return True def main(argv): if (len(sys.argv) != 2): sys.exit('Usage: prime_numbers4.py ') i = 0 num = 2 nth = int(sys.argv[1]) while i < nth: if is_prime(num): i += 1 if i == nth: print 'The ' + str(nth) + ' prime number is: ' + str(num) num += 1 if __name__ == "__main__": main(sys.argv[1:])